CN107871838B - Bus bar module - Google Patents
Bus bar module Download PDFInfo
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- CN107871838B CN107871838B CN201710875527.2A CN201710875527A CN107871838B CN 107871838 B CN107871838 B CN 107871838B CN 201710875527 A CN201710875527 A CN 201710875527A CN 107871838 B CN107871838 B CN 107871838B
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- China
- Prior art keywords
- voltage detection
- bus bar
- housing
- bus bars
- housing case
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G5/00—Installations of bus-bars
- H02G5/06—Totally-enclosed installations, e.g. in metal casings
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/48—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/48—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
- H01M10/482—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte for several batteries or cells simultaneously or sequentially
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/502—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing
- H01M50/507—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing comprising an arrangement of two or more busbars within a container structure, e.g. busbar modules
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/502—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing
- H01M50/509—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing characterised by the type of connection, e.g. mixed connections
- H01M50/51—Connection only in series
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/502—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing
- H01M50/509—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing characterised by the type of connection, e.g. mixed connections
- H01M50/512—Connection only in parallel
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/569—Constructional details of current conducting connections for detecting conditions inside cells or batteries, e.g. details of voltage sensing terminals
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M2220/00—Batteries for particular applications
- H01M2220/20—Batteries in motive systems, e.g. vehicle, ship, plane
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Connection Of Batteries Or Terminals (AREA)
- Battery Mounting, Suspending (AREA)
- Secondary Cells (AREA)
Abstract
Provided is a bus bar module which can improve the ease of assembly work. The method comprises the following steps: a plurality of bus bars (2) connected to 2 or more electrode terminals of electrode terminal groups arranged in parallel in a row in a battery module including a plurality of battery cells; a housing case (3) having an insulating property and formed with a plurality of housing space sections (3a) for housing the bus bars (2); and a plurality of voltage detection conductors (41) connected to the bus bars (2), wherein the plurality of voltage detection conductors (41) are formed integrally with the housing case (3).
Description
Technical Field
The present invention relates to a bus bar module.
Background
There is a bus bar module used in a battery module configured by connecting a plurality of battery cells in series. The bus bar module has: a plurality of bus bars connecting adjacent battery cells in series; a housing case housing a plurality of bus bars; and voltage detection lines connected to the respective bus bars (see patent document 1). One end of each voltage detection line is connected to a bus bar, and the other end is connected to an ECU mounted on a vehicle, for example, via a connector, and outputs voltage information of the battery cell to which each bus bar is connected, thereby being used for charge control of the battery module and the like.
Documents of the prior art
Patent document
Patent document 1: japanese patent No. 5648610
Disclosure of Invention
Problems to be solved by the invention
However, in the bus bar module, the voltage detection lines are wired to the housing case and connected to the respective bus bars at the time of assembly to the battery module or the like, and thus there is room for improvement in terms of ease of operation.
The present invention has been made in view of the above circumstances, and an object thereof is to provide a bus bar module capable of improving ease of work at the time of assembly.
Means for solving the problems
To achieve the above object, a bus bar module according to the present invention includes: a plurality of bus bars connected to 2 or more electrode terminals of electrode terminal groups arranged in parallel in a row in a battery module including a plurality of battery cells; a housing case having an insulating property, in which a plurality of housing space portions for housing the bus bars are formed; and a plurality of voltage detection conductors connected to the bus bars, respectively, the plurality of voltage detection conductors being formed integrally with the housing case.
In the above bus bar module, it is preferable that the plurality of voltage detection conductors are printed circuit bodies laid on the surface of the housing case.
In the above bus bar module, it is preferable that the plurality of voltage detection conductors are embedded in the housing case.
In the above bus bar module, it is preferable that the housing case includes a plurality of pairs of frames forming the housing space portion and a lid portion closing the frames, the frames and the lid portion are coupled by a hinge portion, and the voltage detection conductor is formed from the lid portion to the frames through at least the hinge portion.
In the bus bar module, it is preferable that a bottom portion forming each of the accommodation space portions is formed with a connection hole, and one end portion of each of the voltage detection conductors is connected to the bus bar in a state of being exposed to the connection hole.
In the bus bar module, it is preferable that a connection convex portion inserted into the connection hole is formed in each bus bar, and one end portion of each voltage detection conductor is connected to the connection convex portion in a state of being exposed to the connection hole.
ADVANTAGEOUS EFFECTS OF INVENTION
In the bus bar module according to the present invention, since the plurality of voltage detection conductors are integrally formed in the housing case, the bus bar module has the following effects: the housing case does not need to be wired with a voltage detection conductor, and the ease of assembly work can be improved.
Drawings
Fig. 1 is a perspective view of a battery module in which a bus bar module according to an embodiment is mounted.
Fig. 2 is a plan view of the bus bar module according to the embodiment (open state).
Fig. 3 is a perspective view of a bus bar module according to an embodiment.
Fig. 4 is a sectional view of the bus bar module according to the embodiment (open state).
Fig. 5 is a sectional view of the bus bar module according to the embodiment (closed state).
Fig. 6 is a cross-sectional view of a modified example (open state) of the bus bar module according to the embodiment.
Description of reference numerals
1: bus bar module
2: bus bar
21: terminal hole
22: connecting projection
3 a: accommodating space part
31: frame body
31 c: bottom part
31 d: connecting hole
32: cover part
33: 1 st hinge part
34: 2 nd hinge part
35: 3 rd hinge part
36: locking receiving part
37: clamping claw
4: voltage detection conductor set
41: voltage detection conductor
42: external electric wire
43: insulator
5: connector with a locking member
100: battery module
101: battery unit
102: electrode terminal
103: electrode terminal group
Detailed Description
Embodiments according to the present invention will be described in detail below with reference to the drawings. The present invention is not limited to the present embodiment. The components in the following embodiments include components that can be easily replaced by those skilled in the art, or substantially the same components.
[ embodiment ]
Fig. 1 is a perspective view of a battery module in which a bus bar module according to an embodiment is mounted. Fig. 2 is a plan view of the bus bar module according to the embodiment (open state). Fig. 3 is a perspective view of a bus bar module according to an embodiment. Fig. 4 is a sectional view of the bus bar module according to the embodiment (open state). Fig. 5 is a sectional view of the bus bar module according to the embodiment (closed state). Fig. 1 is a view showing a state in which a bus bar module is assembled to one electrode terminal group, fig. 1 and 5 are views in which a lid portion is in a closed state, fig. 2 and 4 are views in which a lid portion is in an open state, fig. 4 is a cross-sectional view of a case where a lid portion is in an open state as viewed from an arrangement direction, and fig. 5 is a cross-sectional view of a case where a lid portion is in a closed state as viewed from an arrangement direction. Here, the X direction in each drawing is the arrangement direction of the electrode terminals and the bus bars in the present embodiment. The Y direction is the width direction of the bus bar module of the present embodiment, and is a direction perpendicular to the arrangement direction. The Z direction is a vertical direction of the bus bar module, and is a direction perpendicular to the arrangement direction and the width direction. The X1 direction is a connector direction of the bus bar module, and the X2 direction is a non-connector direction opposite to the connector direction. The Y1 direction is a hinge direction of the bus bar module, and the Y2 direction is a non-hinge direction opposite to the hinge direction. The Z1 direction is above the bus bar module, and the Z2 direction is below the bus bar module in the opposite direction from above.
As shown in fig. 1, the bus bar module 1 of the present embodiment is mounted on a battery module 100. The battery module 100 is configured by arranging a plurality of battery cells 101 such as secondary batteries in the arrangement direction and modularizing them. The battery module 100 is mounted on, for example, an Electric Vehicle (EV) or a hybrid vehicle (HV, PHV), and supplies electric power to a rotating electric machine as a drive source or stores (charges) electric power generated by the rotating electric machine for use. For example, the power supply device can obtain a high battery output corresponding to a required output of the vehicle by connecting a plurality of batteries in series. The plurality of battery cells 101 have a pair of electrode terminals 102 (positive electrode terminal and negative electrode terminal) at both ends in the width direction, and electrode terminal groups 103 each including the plurality of electrode terminals 102 arranged in the arrangement direction in the battery module 100 are formed in 2 rows spaced apart in the width direction. The battery module 100 is equipped with the bus bar module 1 corresponding to each electrode terminal group 103, and the electrode terminals 102 (positive electrode terminal, negative electrode terminal) of the plurality of battery cells 101 are connected in series or in parallel by the bus bar module 1 to function as a desired power source. For example, when a high output corresponding to a required output of a vehicle, not shown, on which the battery module 100 is mounted is obtained, the plurality of battery cells 101 may be connected in series.
The bus bar module 1 is used to connect a plurality of battery cells 101 in series or in parallel, and includes: a plurality of bus bars 2, a housing case 3, a plurality of voltage detection conductors 41 constituting a voltage detection conductor group 4, and a connector 5. The bus bar module 1 outputs voltage information of the battery cells 101 connected to the respective bus bars 2 to the outside via the voltage detection conductors 41. The voltage information is input to an ECU (electronic control unit), not shown, mounted in the vehicle via the connector 5, and used for charge/discharge control and the like of the battery module 100 based on the acquired voltage information.
The bus bar 2 is connected to 2 or more electrode terminals 102 of the electrode terminal groups 103 arranged in a row and accommodated in the accommodating case 3. The bus bar 2 of the present embodiment electrically connects adjacent electrode terminals 102, 102 on one side among the 2 electrode terminals 102, 102 of the battery cells 101 adjacent in the arrangement direction. The bus bar 2 is formed in a flat plate shape using a conductive material such as metal. As shown in fig. 2 to 5, the bus bar 2 has a plurality of terminal holes 21 formed along the longitudinal direction, the terminal holes corresponding to the electrode terminals 102. Electrode terminals 102 protruding upward from battery cells 101 are inserted into terminal holes 21, and are joined to electrode terminals 102 by a fixing tool, not shown, such as a nut. In the bus bar accommodating state in which the bus bar 2 is accommodated in the accommodating case 3, a connection convex portion 22 protruding downward is formed on the back surface 2a facing the bottom portion 31c of the accommodating case 3. The bus bars 2 are accommodated in the accommodation space portions 3a of the accommodation case 3, which will be described later, such that the longitudinal direction is parallel to the arrangement direction and the bus bars are arranged in a row in the arrangement direction.
The housing case 3 houses the bus bars 2, and is formed with housing space portions 3a corresponding to the bus bars 2. The housing case 3 is made of, for example, synthetic resin, has insulation properties, and includes a pair of frames 31, a lid portion 32, a 1 st hinge portion 33, and a 3 rd hinge portion 35.
The frame 31 is arranged in plural in the arrangement direction, and in the present embodiment, the number thereof corresponds to the number of the bus bars 2. The frame 31 is formed along the outer periphery of the accommodated bus bar 2 when viewed in the vertical direction, and in the present embodiment, is formed in a rectangular shape extending in the vertical direction. The frame 31 has an upper opening 31a and a lower opening 31b formed in the vertical direction, and a bottom 31c that divides the lower opening 31b in the arrangement direction. The bottom portion 31c is provided at the center in the arrangement direction of the lower side opening portions 31b, and both ends in the width direction are connected to the frame 31. The bottom portion 31c is formed with a connecting hole 31d into which the connecting protrusion 22 is inserted in the bus bar accommodating state. The frame body 31 has a bus bar locking claw protruding toward the accommodation space portion 3a formed on an inner wall forming the accommodation space portion 3a, and restricts movement of the bus bar 2 inserted into the accommodation space portion 3a in the vertical direction by the bus bar locking claw, and the bus bar 2 is held between the bottom portion 31c and the bus bar locking claw. Among the wall portions opposed to each other in the width direction, the frame 31 has a locking receiving portion 36 formed on the wall portion on the side where the 2 nd hinge portion 34 is not provided. The locking receiving portion 36 is inserted by a locking claw 37 described later, and the locking claw 37 is locked. The locking receiving portions 36 in the present embodiment are provided at intervals to all the housings 31, but may be provided to all the housings 31.
The cover portion 32 closes the accommodation space portion 3 a. The lid portion 32 of the present embodiment closes the upper side opening portion 31a, thereby closing the upper side of the accommodation space portion 3 a. The lid 32 is coupled to the paired housings 31 by the 1 st hinge 33. The cover portion 32 has a locking claw 37 formed at an end portion of the end portions opposed to each other in the width direction on the side where the 1 st hinge portion 33 is not provided. The locking claws 37 of the present embodiment are provided at intervals to all the cover portions 32, but may be provided to all the cover portions 32.
The 1 st hinge portion 33 is flexible and flat in a state where no external force is applied, and both ends in the width direction are connected to the frame body 31 and the lid portion 32, respectively. That is, the 1 st hinge 33 is formed integrally with the housing 31 and the lid 32 so as to swing the lid 32 in the arrangement direction, that is, so as to rotate freely toward the upper opening 31a of the housing 31. The 1 st hinge portion 33 of the present embodiment is connected to the center portion in the arrangement direction of one of the wall portions facing in the width direction of the frame 31 and the upper side end portion thereof, and is connected to one of the both end portions in the width direction of the lid portion 32 and the center portion in the arrangement direction thereof.
The 2 nd hinge portion 34 has flexibility, is U-shaped in a state where no external force acts when viewed from the width direction, and is connected to the lid portions 32, 32 adjacent to each other in the arrangement direction. That is, the 2 nd hinge portion 34 allows one of the adjacent lid portions 32, 32 to swing freely in the width direction with respect to the other lid portion 32, and all the lid portions 32 aligned in the alignment direction are integrally formed. The 2 nd hinge portion 34 of the present embodiment is connected to the widthwise central portion of the end portions facing in the arrangement direction of the cover portions 32.
The 3 rd hinge portion 35 has flexibility, and is formed in an inverted U shape when viewed from the width direction without an external force, and is connected to the frames 31, 31 adjacent to each other in the arrangement direction. That is, the 3 rd hinge portion 35 allows one frame 31 of the adjacent frames 31, 31 to swing freely in the width direction with respect to the other frame 31, and all the frames 31 arranged in the arrangement direction are integrally formed. The 3 rd hinge portion 35 of the present embodiment is connected to each of the frames 31, 31 adjacent to the end portion in the non-hinge direction at both ends in the width direction, of the wall portions facing in the arrangement direction of the frames 31.
The voltage detection conductor group 4 is constituted by a plurality of voltage detection conductors 41. The voltage detection conductors 41 are connected to the respective bus bars 2, and are arranged in plural numbers in the width direction, i.e., in the present embodiment, the number of the bus bars 2 is plural. One end of the voltage detection conductor 41 of the present embodiment is electrically connected to the bus bar 2, and the other end is electrically connected to the external wire 42. The external wires 42 are exposed outside the housing case 3 and arranged on the connector direction side of the cover 32 on the connector direction side of the covers 32 aligned in the alignment direction. The external wire 42 of the present embodiment is different from the voltage detection conductor 41 in configuration, and is, for example, a wire in which 1 conductor is covered with an insulator, and one end portion is electrically connected to the voltage detection conductor 41, and the other end portion is electrically connected to a terminal, not shown, held by the connector 5. Further, the outer wire 42 may be an FFC (flexible flat cable) in which a conductor corresponding to each voltage detection conductor 41 is coated with 1 insulator; an FPC (flexible printed circuit) having printed circuit wiring corresponding to each voltage detection conductor 41 is formed on a flexible substrate.
Here, the voltage detection conductor 41 is formed integrally with the housing case 3. The voltage detection conductor 41 of the present embodiment is a printed circuit body, and is integrally formed with the housing case 3 by being laid on the surface of the housing case 3. The voltage detection conductor 41 is, for example, a resin to which conductive metal particles are added, is formed by a dispenser, and is laid on the surface of the housing case 3. That is, the voltage detection conductor 41 of the present embodiment is directly laid on the housing case 3. The formation of the voltage detection conductor 41 by the distributor is performed by a drawing device including the distributor and a stage corresponding to the distributor. The dispenser discharges the raw material of the voltage detection conductor 41 filled inside to the housing case 3 and lays it on the surface. The dispenser has: a filling portion for filling the voltage detection conductor 41 with a material; a nozzle in communication with the filling portion and with an exterior of the dispenser. The table has a fixing mechanism for fixing the housing case 3. The dispenser and the table are connected to a control section. The control unit sets mapping information of a circuit diagram corresponding to the shape of the voltage detection conductor 41, and moves the dispenser and the stage relative to each other based on the mapping information. The dispenser or the table can be moved in three mutually perpendicular directions. When the operator actuates the drawing device, the dispenser discharges the material filled from the tip of the nozzle to the surface of the housing case 3. At the same time, the dispenser or the stage moves according to the mapping information set by the control unit. As described above, the voltage detection conductor 41 is laid on the surface of the housing case 3.
The voltage detection conductor 41 is divided into a lid section 41a, a 1 st hinge section 41b, a housing section 41c, and a connection hole section 41 d. The voltage detection conductors 41 of the cover region 41a are formed on the back surface 32a of the cover 32. The voltage detection conductors 41 of the cover region 41a are formed to extend in the arrangement direction from the end portion on the connector direction side of the cover 32 on the connector direction side of the covers 32 arranged in the arrangement direction. Each voltage detection conductor 41 of the cover region 41a is formed to extend to the cover 32 paired with the frame 31 accommodating the bus bar 2 connected to the voltage detection conductor 41, and both ends are connected to the external wire 42 and the voltage detection conductor 41 of the 1 st hinge region 41 b. Among the voltage detection conductors 41 of the cover portion region 41a, the voltage detection conductor 41 crossing the cover portion 32 in the arrangement direction is also formed on the back surface of the 2 nd hinge portion 34 up to both end portions in the arrangement direction of the 2 nd hinge portion 34. The voltage detection conductor 41 of the 1 st hinge region 41b is formed on the back surface 33a of the 1 st hinge portion 33. The voltage detection conductor 41 of the 1 st hinge region 41b is formed to both ends in the width direction of the 1 st hinge portion 33, and both ends are connected to the voltage detection conductors 41 of the lid region 41a and the housing region 41 c. That is, the voltage detection conductor 41 is formed from the lid 32 to the housing 31 via the 1 st hinge portion 33. The voltage detection conductor 41 of the frame body region 41c is formed continuously with the upper surface 31e, the inner peripheral surface 31f, and the bottom upper surface 31g of the frame body 31. The voltage detection conductor 41 of the housing area 41c is formed on the upper surface 31e to both ends in the width direction, on the inner peripheral surface 31f to both ends in the vertical direction, on the bottom upper surface 31g to the connecting hole 31d in the width direction, and both ends are connected to the 1 st hinge area 41b and the connecting hole area 41 d. The voltage detection conductor 41 in the connection hole region 41d is formed on the inner circumferential surface 31f constituting the connection hole 31 d. The voltage detection conductor 41 in the connection hole region 41d is formed along the vertical direction with respect to the inner peripheral surface 31f, and the upper end is connected to the frame region 41c and the lower end is connected to the connection projection 22. That is, one end of each voltage detection conductor 41 is exposed to the connection hole 31d and contacts the connection projection 22. Each voltage detection conductor 41 can reduce the portion exposed to the outside in a state where the lid portion 32 is closed with respect to the housing 31. Therefore, damage due to external force or impact can be suppressed, and durability can be improved.
Next, the assembly of the bus bar module 1 is explained. Here, each voltage detection conductor 41 is formed as a printed circuit body in advance in the housing case 3, and the other end portion is connected to the connector 5 via the external wire 42. First, the operator accommodates the bus bar 2 in each of the accommodation space portions 3a of the accommodation case 3. In the bus bar accommodating state, the bus bar 2 is held in the accommodating space portion 3a by the bus bar locking nail, and the connection convex portion 22 is inserted into the connection hole 31d to face the end portion of the connection hole region 41d on the lower side of the voltage detection conductor 41. Next, the operator connects each bus bar 2 to each voltage detection conductor 41. Here, the operator electrically connects the bus bar 2 disposed in the same housing space portion 3a to the voltage detection conductor 41 by an electrical connection method such as laser welding or welding. Next, the operator assembles the bus bar module 1 to the battery module 100 in a state where the lid portion 32 is opened (open state). At this time, the electrode terminals 102 of the electrode terminal group 103 are inserted into the terminal holes 21 of the bus bars 2, as shown in fig. 4. Next, the operator joins the bus bar 2 to the electrode terminal 102 with a fixing tool. Next, as shown in fig. 5, the operator sets the lid portion 32 to the closed state (closed state). Here, the operator swings the lid portion 32 in the arrangement direction to close the upper side openings 31a of the paired frame bodies 31, and inserts the locking claws 37 into the locking receiving portions 36, thereby locking and holding the closed state of the lid portion 32.
As described above, in the bus bar module 1, since the voltage detection conductor 41 is integrated with the housing case 3 as a printed circuit body in advance, it is not necessary to connect the voltage detection conductor 41 to the housing case 3 when assembling the bus bar module 1, and therefore, the ease of work at the time of assembling can be improved. In addition, when the bus bar module 1 is assembled to the battery module 100, since it is not necessary to take time for connecting the voltage detection conductors 41 to the housing case 3, it is possible to shorten the assembly time of the bus bar module 1 to the battery module 100.
Further, since the voltage detection conductor 41 is a printed circuit body, it can be freely formed on the surface of the housing case 3. Therefore, the voltage detection conductor 41 can be wired even at a portion where the wiring of the voltage detection conductor 41 is difficult due to structural restrictions of the housing case 3, and therefore, restrictions on the shape of the bus bar module 1 due to the wiring of the voltage detection conductor 41 can be suppressed.
Each voltage detection conductor 41 is connected to the connector 5 via the cover 32. Since the lid portion 32 has a flat plate shape to close the accommodation space portion 3a, the voltage detection conductor 41 can be easily formed.
The voltage detection conductor 41 has one end exposed to the connection hole 31d, and the bus bar 2 is accommodated in the accommodation space 3a so as to face the connection projection 22 inserted into the connection hole 31 d. Therefore, since the bus bar 2 and the one end portion of the voltage detection conductor 41 can be easily positioned, the bus bar 2 and the voltage detection conductor 41 can be easily connected.
In the above embodiment, each voltage detection conductor 41 may be formed in a recess formed in the surface of the housing case 3 and protruding inward in the housing case 3. In this case, since the voltage detection conductor 41 as a printed circuit body can be prevented from protruding from the surface of the housing case 3, damage due to external force or impact can be prevented, and durability can be improved.
In the above embodiment, the voltage detection conductor 41 is formed by a distributor, but the present invention is not limited thereto, and may be formed by printing, vapor deposition, Molded Interconnect Device (MID, Molded Interconnect Device), or the like.
In the above embodiment, the voltage detection conductor 41 is a printed circuit body, but the present invention is not limited thereto, and the voltage detection conductor 41 may be embedded in the housing case 3. Fig. 6 is a cross-sectional view of a modified example (open state) of the bus bar module according to the embodiment. As shown in fig. 6, for example, the voltage detection conductor group 4 including the plurality of voltage detection conductors 41 may be configured as 1 flexible flat cable and embedded in the housing case 3. Each voltage detection conductor 41 is a flexible conductor having a strip shape with a rectangular cross-sectional shape, and each voltage detection conductor 41 is covered with 1 flexible insulator 43 made of, for example, a synthetic resin, thereby constituting a flexible flat cable having a strip shape with a rectangular cross-sectional shape. Here, the insulator 43 may be the same material as the housing case 3 or a different material as long as it has insulation properties. The voltage detection conductor set 4 is embedded in the housing case 3 by a known method, for example, by insert molding or the like. Therefore, the voltage detection conductor group 4, which is a flexible flat cable, is disposed in advance in a mold, and the housing case 3 is molded by the mold, whereby the housing case 3 can be formed and the voltage detection conductors 41 can be embedded. This eliminates the need to connect the voltage detection conductors 41 to the housing case 3, and therefore, the ease of assembly work can be improved, and the time required to assemble the bus bar module 1 to the battery module 100 can be shortened.
The voltage detection conductor group 4 may be 1 flexible printed board. In this case, the voltage detection conductor group 4 is configured by forming each voltage detection conductor 41 as a printed wiring on a flexible 1-piece substrate, and covering the flexible substrate with a protective layer so as to cover the printed wiring. The voltage detection conductors 41 may be formed as flexible flat cables or flexible printed boards. That is, the voltage detection conductor group 4 may be configured as an aggregate of a plurality of flexible flat cables or flexible printed boards corresponding to the voltage detection conductors 41. The voltage detection conductor 41 itself may be directly embedded in the housing case 3.
In the present embodiment, the case where the voltage detection conductor 41 is connected to the connection convex portion 22 has been described, but the present invention is not limited thereto, and the voltage detection conductor 41 may be directly connected to the back surface 2a of the bus bar 2. In this case, one end of the voltage detection conductor 41 is exposed in the connection hole 31d, and the one end is electrically connected to the portion of the back surface 2a of the bus bar 2 exposed from the connection hole 31d by a conductive connection method such as conductive paste or soldering.
Claims (5)
1. A bus bar module, comprising:
a plurality of bus bars connected to 2 or more electrode terminals of electrode terminal groups arranged in parallel in a row in a battery module including a plurality of battery cells;
a housing case having an insulating property, in which a plurality of housing space portions for housing the bus bars are formed;
a plurality of voltage detection conductors connected to the bus bars, respectively,
a plurality of the voltage detection conductors are integrally formed with the housing case,
the plurality of voltage detection conductors are buried in the housing case.
2. A bus bar module, comprising:
a plurality of bus bars connected to 2 or more electrode terminals of electrode terminal groups arranged in parallel in a row in a battery module including a plurality of battery cells;
a housing case having an insulating property, in which a plurality of housing space portions for housing the bus bars are formed;
a plurality of voltage detection conductors connected to the bus bars, respectively,
the housing case has a plurality of pairs of frames forming the housing space portion and a lid portion closing the frames,
the frame body and the lid are connected by a hinge,
the voltage detection conductor is formed from the cover to the housing at least via a hinge portion.
3. A bus bar module, comprising:
a plurality of bus bars connected to 2 or more electrode terminals of electrode terminal groups arranged in parallel in a row in a battery module including a plurality of battery cells;
a housing case having an insulating property, in which a plurality of housing space portions for housing the bus bars are formed;
a plurality of voltage detection conductors connected to the bus bars, respectively,
a hole for connection is formed in each of the bottom portions forming the accommodation space portions,
one end of each of the voltage detection conductors is connected to the bus bar in a state where the connection hole is exposed.
4. The bus bar module according to claim 3,
a connecting protrusion inserted into the connecting hole is formed in each of the bus bars,
one end of each of the voltage detection conductors is connected to the connection projection in a state of being exposed to the connection hole.
5. The bus bar module according to any one of claims 1 to 4,
the plurality of voltage detection conductors are printed circuit bodies laid on the surface of the housing case.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2016186818A JP6533505B2 (en) | 2016-09-26 | 2016-09-26 | Bus bar module |
| JP2016-186818 | 2016-09-26 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107871838A CN107871838A (en) | 2018-04-03 |
| CN107871838B true CN107871838B (en) | 2020-11-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710875527.2A Active CN107871838B (en) | 2016-09-26 | 2017-09-25 | Bus bar module |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US10381815B2 (en) |
| JP (1) | JP6533505B2 (en) |
| CN (1) | CN107871838B (en) |
| DE (1) | DE102017216869A1 (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102016116842B3 (en) * | 2016-09-08 | 2018-02-15 | Lisa Dräxlmaier GmbH | Connector for electrically connecting two electrical assemblies |
| JP6622163B2 (en) * | 2016-09-13 | 2019-12-18 | 矢崎総業株式会社 | Battery module voltage detector and battery pack |
| CN112743749A (en) * | 2017-04-04 | 2021-05-04 | 大山电子株式会社 | Method for manufacturing bus bar and bus bar manufactured by the manufacturing method |
| JP6605536B2 (en) * | 2017-06-08 | 2019-11-13 | 矢崎総業株式会社 | Bus bar module and power supply |
| JP2019207823A (en) * | 2018-05-30 | 2019-12-05 | 株式会社オートネットワーク技術研究所 | Wiring module and power storage module |
| JP6774460B2 (en) * | 2018-07-13 | 2020-10-21 | 矢崎総業株式会社 | Circuit body and battery module |
| JP7028105B2 (en) * | 2018-08-29 | 2022-03-02 | 住友電装株式会社 | Battery wiring module |
| KR102371373B1 (en) * | 2018-12-06 | 2022-03-04 | 주식회사 엘지에너지솔루션 | Battery module |
| JP7153575B2 (en) * | 2019-01-21 | 2022-10-14 | 矢崎総業株式会社 | conductive module |
| JP6983185B2 (en) * | 2019-01-21 | 2021-12-17 | 矢崎総業株式会社 | Conductive module |
| KR20200120421A (en) * | 2019-04-12 | 2020-10-21 | 주식회사 엘지화학 | Battery module |
| JP7078664B2 (en) * | 2020-04-07 | 2022-05-31 | 矢崎総業株式会社 | Busbar module |
| JP7447771B2 (en) * | 2020-11-25 | 2024-03-12 | トヨタ自動車株式会社 | battery module |
| JP7484679B2 (en) * | 2020-11-30 | 2024-05-16 | トヨタ自動車株式会社 | Battery pack |
| KR20220091302A (en) * | 2020-12-23 | 2022-06-30 | 현대모비스 주식회사 | case for Isolation having FUSING bus bar for safe transportation of battery module |
| KR20220101806A (en) * | 2021-01-12 | 2022-07-19 | 에스케이온 주식회사 | Battery module |
| CN113097952B (en) * | 2021-04-29 | 2022-06-14 | 珠海光乐电力母线槽有限公司 | Copper-aluminum alloy intelligent bus trunk line system |
| US11469578B1 (en) * | 2021-06-28 | 2022-10-11 | Shenzhen Jinming Electronic Commerce Co., Ltd. | Flip-type wire slot |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5648610A (en) | 1979-09-28 | 1981-05-01 | Karera Intern Gmbh | Spectacles having detachable lenses |
| EP2360756A1 (en) * | 2003-10-28 | 2011-08-24 | Johnson Controls Techonology Company | Battery cell with improved thermal and electrical conductivity |
| JP5500336B2 (en) * | 2009-06-23 | 2014-05-21 | 株式会社オートネットワーク技術研究所 | Battery connection assembly |
| JP2011049047A (en) * | 2009-08-27 | 2011-03-10 | Autonetworks Technologies Ltd | Battery connection assembly |
| JP5748511B2 (en) * | 2010-10-22 | 2015-07-15 | 矢崎総業株式会社 | Bus bar module and power supply device including the bus bar module |
| JP5648610B2 (en) | 2011-09-06 | 2015-01-07 | 株式会社オートネットワーク技術研究所 | Battery wiring module |
| JP5618157B2 (en) * | 2011-09-21 | 2014-11-05 | 株式会社オートネットワーク技術研究所 | Battery wiring module |
| JP6213624B2 (en) | 2016-07-20 | 2017-10-18 | セイコーエプソン株式会社 | Recording apparatus and method for controlling recording apparatus |
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2016
- 2016-09-26 JP JP2016186818A patent/JP6533505B2/en active Active
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2017
- 2017-09-14 US US15/705,004 patent/US10381815B2/en active Active
- 2017-09-25 DE DE102017216869.2A patent/DE102017216869A1/en active Pending
- 2017-09-25 CN CN201710875527.2A patent/CN107871838B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| US10381815B2 (en) | 2019-08-13 |
| US20180090920A1 (en) | 2018-03-29 |
| CN107871838A (en) | 2018-04-03 |
| DE102017216869A1 (en) | 2018-03-29 |
| JP2018055784A (en) | 2018-04-05 |
| JP6533505B2 (en) | 2019-06-19 |
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